期刊
ARCHIVES OF NEUROLOGY
卷 68, 期 11, 页码 1440-1446出版社
AMER MEDICAL ASSOC
DOI: 10.1001/archneurol.2011.250
关键词
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资金
- National Institutes of Health [NS050641, T32 AG20506]
- Les Turner ALS Foundation
- Vena E. Schaff ALS Research Fund,
- Harold Post Research Professorship
- Herbert and Florence C. Wenske Foundation
- Ralph and Marian Falk Medical Research Trust
- David C. Asselin MD Memorial Fund
- Les Turner ALS Foundation/Herbert C. Wenske Foundation
Background: The SQSTM1 gene encodes p62, a major pathologic protein involved in neurodegeneration. Objective: To examine whether SQSTM1 mutations contribute to familial and sporadic amyotrophic lateral sclerosis (ALS). Design: Case-control study. Setting: Academic research. Patients: A cohort of 546 patients with familial (n = 340) or sporadic (n = 206) ALS seen at a major academic referral center were screened for SQSTM1 mutations. Main Outcome Measures: We evaluated the distribution of missense, deletion, silent, and intronic variants in SQSTM1 among our cohort of patients with ALS. In silico analysis of variants was performed to predict alterations in p62 structure and function. Results: We identified 10 novel SQSTM1 mutations (9 heterozygous missense and 1 deletion) in 15 patients (6 with familial ALS and 9 with sporadic ALS). Predictive in silico analysis classified 8 of 9 missense variants as pathogenic. Conclusions: Using candidate gene identification based on prior biological knowledge and the functional prediction of rare variants, we identified several novel SQSTM1 mutations in patients with ALS. Our findings provide evidence of a direct genetic role for p62 in ALS pathogenesis and suggest that regulation of protein degradation pathways may represent an important therapeutic target in motor neuron degeneration.
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